U.S. patent number 4,266,552 [Application Number 06/093,342] was granted by the patent office on 1981-05-12 for lead anchoring bobbin.
This patent grant is currently assigned to Medtronic, Inc.. Invention is credited to Robert G. Dutcher, Edward G. O'Neill.
United States Patent |
4,266,552 |
Dutcher , et al. |
May 12, 1981 |
Lead anchoring bobbin
Abstract
The lead anchoring bobbin for containing a transvenous pacing
lead at an entry site in human tissue and including a grooved
bobbin and buttons which frictionally engage and detain the lead on
either side of the bobbin. The lead anchoring bobbin is made of
medical silicone rubber or like material.
Inventors: |
Dutcher; Robert G.
(Minneapolis, MN), O'Neill; Edward G. (St. Paul, MN) |
Assignee: |
Medtronic, Inc. (Minneapolis,
MN)
|
Family
ID: |
22238404 |
Appl.
No.: |
06/093,342 |
Filed: |
November 13, 1979 |
Current U.S.
Class: |
607/113 |
Current CPC
Class: |
A61N
1/057 (20130101); A61N 1/375 (20130101) |
Current International
Class: |
A61N
1/375 (20060101); A61N 1/372 (20060101); A61N
001/00 () |
Field of
Search: |
;128/419P |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Kamm; William E.
Attorney, Agent or Firm: Rooney; John L. Breimayer; Joseph
F. Schwartz; Lew
Claims
Having thus described the invention, what is claimed is:
1. Lead anchoring bobbin for use with an implantable lead having
proximal and distal ends for attaching to human tissue
comprising:
a. anchoring means having two diametrically opposed partial
circumferential discs and a partial truncated disc of a smaller
diameter than said two discs, said smaller partial circumferential
disc positioned and secured between said two partial
circumferential discs, whereby said implantable lead is anchored
within a groove formed between said two partial circumferential
discs;
b. at least one retaining means adjacent to said anchoring means
for frictionally retaining said implantable lead adjacent to said
anchoring means having at least one wing extending outwardly from
one of said two partial circumferential discs, said wing including
a button having a hole and a slit to said hole whereby said hole
retains said lead within said button; and
c. at least one suturing means for suturing said anchoring means
retaining said loop to said human tissue whereby said anchoring
means provides for anchoring of said implantable lead to
tissue.
2. Lead anchoring bobbin of claim 1 wherein said at least one wing
further comprises:
a left wing and a right wing extending outwardly from one of said
two partial circumferential discs, including said hole and said
slit to said hole on each of said wings whereby each of said hole
and slit form tabs on each side of said button thereby providing
strain relief for a lead.
3. Lead anchoring bobbin of claim 2 wherein said slits, holes and
buttons are in line.
4. Lead anchoring bobbin of claim 3 comprising a longitudinal
member extending outwardly from one of said two partial
circumferential discs thereby connecting said retaining
buttons.
5. Lead anchoring bobbin for use with an implantable lead having
proximal and distal ends and for suturing to human tissue
comprising:
a. anchoring means having a substantially circular circumference
for fixedly attaching a loop of said implantable lead by
frictionally engaging said loop of said implantable lead
intermediate said proximal and distal ends;
b. at least one retaining means adjacent to said anchoring means
for frictionally retaining said implantable lead adjacent to said
anchoring means; and
c. at least one suturing means having at least one suturing hole
extending through all of said discs whereby suture attaches said
lead anchoring bobbin to human tissue and said lead to said lead
anchoring bobbin.
6. In combination, lead anchoring bobbin and transvenous pacing
lead for use in human tissue comprising lead anchoring bobbin
including a bobbin having a circumferential groove in said bobbin
and a flat truncated portion running across the top of said bobbin,
outwardly extending wings at an oblique angle from each other
extending from one side of said bobbin and substantially parallel
with said top truncated portion of said bobbin, each of said wings
including a retaining hole running therethrough, substantially
parallel and in line with said truncated portion and a slit through
each of said wing to each of said hole, and suture holes within the
circumference of said groove of said bobbin and a transvenous
pacing lead of longitudinal length whereby said transvenous pacing
lead is inserted through said slit into said hole of said wing,
wound around said groove in said bobbin, overlapping said lead at
said truncated portion and inserted through said slit into said
hole of said other wing thereby providing for a tight loop on said
bobbin, visible entry site in a vein, and strain relief of said
transvenous pacing lead at site of entry into said vein and
providing for anchoring of said transvenous pacing lead wound on
said lead anchoring bobbin to human tissue, and suturing said lead
anchoring bobbin with sutures to said human tissue.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a surgical device, and
more importantly, pertains to a transvenous pacing lead anchoring
bobbin for containing a transvenous pacing lead at an entry site in
human tissue.
2. Description of Prior Art
In the past, it has always been a prior art practice to secure
transvenous pacing leads by tying the lead off to a vein or using
an anchoring sleeve. When the transvenous pacing lead was tied off
to a vein, sometimes the lead would work its way free and no longer
be secured at the point of tieoff. When the lead was secured to an
anchoring sleeve, the lead would also sometimes tend to work loose
from the anchoring sleeve. Further, neither tying the pacing lead
off at the vein or using an anchoring sleeve provided for strain
relief of the transvenous pacing lead at the site of a
fixation.
The present invention overcomes the disadvantages of prior art
problems by providing a lead anchoring bobbin. cl SUMMARY OF THE
INVENTION
The present invention provides a lead anchoring bobbin for use with
the transvenous pacing lead for containing a transvenous pacing
lead at an entry site in human tissue.
According to one embodiment of the present invention, there is
provided a lead anchoring bobbin including a bobbin having a groove
which accepts a transvenous pacing lead and includes a flat
truncated portion extending across the top of the bobbin, wings
extending outwardly at an oblique angle from each other and
substantially in line and parallel to the top truncated portion of
the bobbin, each of the wings including a hole running therethrough
and substantially parallel and in line with the truncated top
portion and a slit providing for communication of the transvenous
pacing lead to said hole, and suture holes provided within the
circumference of the groove of the bobbin whereby the transvenous
pacing lead is inserted through a slit to engage in a first hole of
the first wing, engaged around a groove in the bobbin, overlap the
lead, and inserted through the slit to engage in the hole of the
second wing thereby providing for a loop tightened on the bobbin at
the visible entry site of a vein, strain relief of the transvenous
pacing lead at the site of entry into a vein, and providing for
anchoring of the transvenous pacing lead to tissue.
One significant aspect and feature of the present invention is that
the lead anchoring bobbin provides a visible loop for the
transvenous pacing lead which is visible not only to the human eye
but also by X-ray.
Another significant aspect and feature of the present invention is
that the lead anchoring bobbin prevents easy withdrawal of the
transvenous pacing lead in that the lead is firmly affixed to the
lead anchoring bobbin and the lead anchoring bobbin is sutured to
human tissue.
A further significant aspect and feature of the present invention
is that the lead anchoring bobbin acts as strain relief holding the
lead and the lead anchoring bobbin, and prohibits the lead from
relocating within the human body.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects and many of the attendant advantages of this
invention will be readily appreciated as the same become better
understood by reference to the following detailed description when
considered in connection with the accompanying drawing in which
like reference numerals designate like parts throughout the FIGURES
thereof and wherein:
FIG. 1 illustrates a plan view of a lead anchoring bobbin, the
present invention, partly in cross-section;
FIG. 2 illustrates a top view of the lead anchoring bobbin;
FIG. 3 illustrates a bottom view of the lead anchoring bobbin;
FIG. 4 illustrates an end view of the lead anchoring bobbin;
and
FIG. 5 illustrates a cross-section view taken along line 5--5 of
FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1, which illustrates a plan view of a lead anchoring bobbin
10, the present invention, partly in cross-section, shows a lead
anchoring bobbin 10 of medical silicone rubber or like material
including a truncated circumferential disc 12 having an outwardly
extending circumferential ring 12a as illustrated in FIG. 5 and
opposing truncated circumferential disc 14 having an outwardly
extending circumferential ring 14a as illustrated in FIG. 5, and a
truncated circumferential disc 16 of a diameter less than that of
the truncated circumferential discs 12 and 14 thereby forming a
groove 18 between the discs 14 and 16. Suture holes 20 and 22
extend entirely through the discs 12-16. Left wing 24 and right
wing 26 extend outwardly from the truncated circumferential disc 14
and attached thereto. Left button 28 and right button 30 affix to
the left and right wings 24 and 26 respectively. Left button 28
includes a slit 32 extending downwardly to a longitudinal hole 36.
Right button 30 includes a slit 34 extending downwardly to a
longitudinal hole 38. A longitudinal member 40 connects the top
portion of the left button 28 to the top portion of the right
button 30 and also connects to the top of the truncated
circumferential disc 14. The longitudinal member 40 provides
structural strength and alignment for a transvenous pacing lead 42
but is not to be construed as a limiting structural element of the
present invention.
Transvenous pacing lead 42 engages through the left slit 32 into
the left hole 36 of the left button 28, winds around and engages
within the groove 18 between the truncated circumferential discs 12
and 14 and against truncated circumferential disc 16 at point 44
and engages out through the right hole 38 of the right button 30,
or vice-versa depending on whether the left side or the right side
is closest to the vein entry site.
FIG. 2 illustrates a top view of the lead anchoring bobbin 10. All
numerals correspond to those elements previously described.
FIG. 3 illustrates a bottom view of the lead anchoring bobbin 10.
Likewise, all numerals correspond to those elements previously
described.
FIG. 4 illustrates an end view lead anchoring bobbin 10. Again, all
numerals correspond to those previously described.
FIG. 5, which illustrates a cross-sectional view taken along line
5--5 of FIG. 1, shows specifically the outwardly extending
circumferential rings 12a of the partially truncated disc 12 and
14a of the partially truncated disc 14. Circumferential rings
provide closed area to accommodate the transvenous pacing lead
42.
PREFERRED MODE OF OPERATION
The lead anchoring bobbin 10 can be manufactured from silicone
rubber or any like material having capabilities of being sterilized
and implanted in the human body.
In use, the transvenous pacing lead 42 is first slid down through
the left slit 32 and engaged into the left hole 36 of the left wing
24, wound around and engaged into the groove 18 formed between the
outwardly extending circumferential rings 12a and 14a of the
truncated circumferential discs 12 and 14 adjacent to and against
the smaller truncated circumferential disc 16, overlapping at point
44, down through the right slit 34, and engaged into the right hole
38 on the right wing 26 of the right button 30 or vice-versa.
Subsequently, the lead 42 is sutured to the lead anchoring bobbin
10 as the lead anchoring bobbin 10 is sutured to tissue with
sutures through suturing holes 20 and 22. The circumferential rings
12a and 14a frictionally retain the lead 42 into the groove between
the two discs 12 and 14. The lead 42 can also be wound from right
to left.
The lead anchoring bobbin 10 provides for a tightened transvenous
pacing lead 42 closed loop which closes on itself at the bobbin
site providing visible entry into the vein and strain relief of the
transvenous pacing lead 42 in addition to providing anchoring for
the transvenous pacing lead 42 to tissue. The closed loop of the
lead 42 frictionally retains itself about the bobbin 10. The
slotted right and left buttons 28 and 30 in effect form opposing
tabs about each side of the lead 42 which provides further strain
relief at each of the buttons 28 and 30.
Various modifications can be made to the lead anchoring bobbin 10
of the present invention without departing from the apparent scope
thereof.
* * * * *